Flue connection



March 1, 1938. A. H. TINNERMAN FLUE CONNECTION Filed May 9. 1956 ACI BY M %/;ITL\ZENTOR.

ATTORNEYS.

Patented Mar. 1, 1938 UNITED'ASTATES PATENT OFFICE FLUE CONNECTION Albert H. Tlnncrman, Cleveland, Ohio Application May 9, 1936, Serial No. 78,767

1 Claim.

This invention relates to flue connections for gas ranges, and has for its principal object the provision of a connection which prevents down drafts into the range, and which occupies a mini- 6 mum space at the rear of the range. In addition, the invention includes a connection which may be made in a simple and expeditious manner, and which has provision for checking an excessive draft and for regulating the up-draft in accordance with conditions at each installation.

Referring now to the drawing, Fig. 1 is a side elevation of a gasrange embodying my invention; Fig. 2 is a rear view of the flue connection on a scale larger than that shown in Fig. 1; Fig.

3 is a top plan view of the connection, and Fig. 4

is a section taken on the line 44 in Fig. 2.

My invention is shown in connection with a range, which is indicated at 10, as having an opening II in a rear wall through which the products of combustion may escape to a flue l2. The flue in turn is shown as being connected to a stack I3. Ordinarily, the range opening, through which the products of combustion escape, is connected to a flue by a' closed elbow, as a result of which a down-draft in the stack flows directly into the range, thereby forcing the products of combustion into the room.

My invention solves the problem of eliminating down-drafts in ranges by utilizing a flue connection which has a bailie that directs downdrafts into the room and yet does not interfere with the normal flow of products of combustion into the flue. This result is accomplished by providing an opening IS in the body portion of 5 the connection directly beneath the flue'opening H. A baflle l8 extends upwardly from the bottom edge of the opening [5 and is preferably narrower than the widthof the connection so that flue gas may readily pass into the flue.

When down-drafts are not present, the products of combustion flow into the flue in the same general direction as the passage of air into the flue through the opening l5, thus avoiding occur rence of eddy currents in any objectionable degree and interfering'with the efliciency of operation ' FIhe-preferred construction for the flue connection comprises a metallic stamping of the form of a hollow body that has a vertical flange 5o 20 which is adapted to be attached to the back of the range by securing members 2 l, and a horizontal flange 22 from which afiue collar'23 is formed. The vertical and horizontal flanges are connected by an inclined wall l6 and side walls 24, the range opening being thereby provided by the space between the inner marginal edges of the vertical flange. s

In the preferred arrangement, the tongue I8 is struck upwardly and inwardly from the wall l6 and consequently the battle, in such illustration, has the same shape as the'opening l5. It is not necessary, however, that the baflie. and opening be the same size and formation, nor is itnecessary that the bafile be made integrally with the metal of which the wall I6 is made. If desired, the baiiie may be made separately and welded to the wall, but in each case the bottom of the baflle is preferably adjacent the lower edge of the opening l5, and in each case, the baffle extends upwardly and is sufflciently flexible that it may be inclined at any desired angle withreference to the wall Hi, The inclination of the baflie is determined by the operator, who installs the range and is dependent upon draft conditions at the place of installation. It is desirable, however, to have the baflie as nearly vertical as possible in order to assure a straight line flow from the flue through the opening in the event of a down-draft.

An advantage of a flue connection embodying my invention is the fact that it may be made of sheet metal in a simple and an economical manner, and that the baflle may be readily manipulated not only to meet conditions at the place of original installation, but also to meet conditions at any other location to which the range may be moved.

I claim:

A unitary flue connection for a range comprising a hollow body including a vertical wall and a horizontal wall having openings in communication with the openings in a range and flue respectively, and a third wall connecting said vertical and horizontal walls, said third wall having a draft-check opening in alignment with said flue opening in the horizontal wall, said third wall at the' l'tiwei -edge df' s'aid "draft-check opening carrying an upstanding bafile lying substantially in a vertical plane including the inner periphery of said flue opening and facing said range opening, said draft-check opening serving as an outlet through which downdrafts from the flue may be deflected without entering the range.

ALBERT H. TINNERMAN. 

